<cfquery name="chkQuiz" datasource="DATES">
SELECT examlog.examID, examlog.quizID, examlog.completed, examlog.uname, Quiz.quizID, Quiz.quizName, Quiz.certificate
FROM Quiz LEFT JOIN examlog ON Quiz.quizID = examlog.quizID
WHERE ((examlog.uname)="#usname#")
</cfquery>
<cfoutput query="chkQuiz">...